The CLPFL-1400 from Crystek Corporation is a Low Pass RF Filter with Frequency DC to 1400 MHz, Insertion Loss 0.05 to 1.50 dB, Rejection 4.10 to 52.38 dB, Power 4 W, Return Loss 6.80 to 32.82 dB. Tags: Connectorized, Butterworth Filter. More details for CLPFL-1400 can be seen below.